<template>
  <view class="goods-item">
    <!-- 左侧的盒子 -->
    <view class="goods-item-left">
      <radio :checked="goods.goods_state" color="#C00000" v-if="showRadio" @click="radioClickHandler"></radio>
      <image :src="goods.goods_small_logo || defaultPic" class="goods-pic"></image>
    </view>
    <!-- 右侧的盒子 -->
    <view class="goods-item-right">
      <!-- 商品的名字 -->
      <view class="goods-name">{{goods.goods_name}}</view>
      <view class="goods-info-box">
        <view class="goods-price">￥{{goods.goods_price | tofixed}}</view>
        <!-- 数字选择框 -->
        <uni-number-box :min="1" :value="goods.goods_count" v-if="showNum" @change="numChangeHandler"></uni-number-box>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    props: {
      goods: {
        type: Object,
        default: {}
      },
      showRadio: {
        type: Boolean,
        //默认情况下，不会展示radio组件
        default: false
      },
      showNum: {
        type: Boolean,
        default: false
      }
    },
    data() {
      return {
        // 默认的图片
        defaultPic: 'https://img0.baidu.com/it/u=596425167,3189264920&fm=253&fmt=auto&app=138&f=JPEG?w=361&h=500'
      };
    },
    filters: {
      tofixed(num) {
        //保留两位小数
        return  Number(num).toFixed(2)
      }
    },
    methods:{
      //这是radio组件的点击事件处理函数
      radioClickHandler(){
        this.$emit('radio-change',{
           goods_id: this.goods.goods_id,
           goods_state: !this.goods.goods_state
        })
      },
      //监听到了NumberBox组件数量变化的事件
      numChangeHandler(val){
          this.$emit('num-change',{
            goods_id: this.goods.goods_id,
            goods_count: +val  ///或者val-0   (这是为了确保val是一个数值)
          })
      }
      
      
    }
  }
</script>

<style lang="scss">
  .goods-item {
    width: 750rpx;
    box-sizing: border-box;
    display: flex;
    padding: 10px 5px;
    border-bottom: 1px solid #f0f0f0;
  
    .goods-item-left {
      margin-right: 5px;
      
      display: flex;
      justify-content: space-between;
      align-items: center;

      .goods-pic {
        width: 100px;
        height: 100px;
        display: block;
      }
    }

    .goods-item-right {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      flex: 1;
      .goods-name {
        font-size: 13px;
      }

      .goods-info-box {
        display: flex;
        justify-content: space-between;
        align-items: center;
        .goods-price {
          color: #C00000;
          font-size: 16px;
        }
      }
    }
  }
</style>
